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@einen grains atwt @ifi-r2' WILLIAM E. LONDON AND JOHN RICHARDSyCINCINNATI, OHIO. Letters Patent Na. 65,821, dated June 18, 1867.

IMPROVEMENT IN SHAIT-GOUPLING.

T0 ALL WHOM IT MAY CON'CERN:

Beit known that We, WILLIAM E. LONDON and JOHN RICHARDS, of Cincinnati,in the county of Hamilton. and State of Ohio, have invented a new andimproved Coupling for Shafts; and vie do hereby declare the following tobe a full and exact description of the same, reference being had to thedrawings, accompanying and forming part of this specification, in which-Figure 1 is a side elevation.

Figure 2, a longitudinal section.

Figure 3, an end view; and

Figure '4, a transverse section through the centre.

-Similar letters of reference on the different figures indicatecorresponding parts. The nature of this invention consists in ashaft-coupling, with two conical sleeves within two separate conicalshells, arranged to act independently on the ends of separate shafts,and when bolted together forming a shaft-coupling for connecting shaftsof different or the same diameters, as set forth and described in thisspecificaton.

This coupling belongs to that class of shaft-couplings Where a splitconical sleeve orsleeves are used to clamp the ends o f shafts, soarranged as to be readily disengaged for mounting pulleys, or inremoving a shaft or parts thereof. In couplings of this class, Where twoindependent conical sleeves have been employed, the outer shell orcasing has been made whole and of a single piece, making the removal ofthe coupling necessary in transportation or in removing sections of theshaft. The arrangement here shown, in which the coupling is formed intwo independent halves, enables the machinist to dt the coupling to theshaft and leave them duringl the erection or transportation of theshafts. Either shaft can be removed from the coupling without loosingthe other, or both can be removed without separating the coupling, orthecoupling can'be unbolted and sepasr'ated in the centre, leaving eachindependent half attached to the ends of the shaft. Another peculiarityof a couplingso constructed, is that the internal compressing sleevesbeing drawn'or moved by means of a revolving" nut, and by means of ascrew-thread on their periphery, cannot be made to spring or bend theshaft, as in the case of split sleeves moved by bolts, when the strainmay fall unequally on the diderent sides or the sleeve, causing a bendin the shaft by such unequal strain.

To enable others skilled in the art to -make and use our invention, iveivill proceed Ato describe the manner of its construction and mode ofapplication, with the aid of the drawings.

The main parts of the coupling, consisting ofthe flanged hubs I: IJ, arenot unlike the common flange-coupling and are bolted together in thesame manner with flush bolts, as shown, or in any other manner toconnect them firmly together. The hubs b b are bored larger than theshaft, and of taper form to receive the sleeves a a. These sleeves a aare made of wrought iron or other strong material, are bored to fit theshaft, 'and turned on their lexterior to lit Jthe conical bore in thehubs Z) b, with a parallel extension to receive the ring-nuts C C. Thesenuts are threaded. on the sleeves a a, and dran' them from the centre byWorking against the hub b in the manner shown. 'lhe sleeves a a, whendrawn from the centre against the taper on their exterior, are closedconcentrically upon the shaft, clamping it firmly, and holding it forordinary uses without the Vkey e. The sleeves a a are spl-it on oneside, to admit of their being expanded and closed to rit shafts ofdifferent diameters, when such variation is slight; and can also begrooved at one or more points, as shown in iig. 4, to make them moreflexible without altering their functions.

In applying the coupling, the ring-nut C is first put over thc end ofthe shaft, the main shell b is thenput on, and lastly the sleeve a. Theend of sleeve C being set ilush with the end of the shaft, the shell isthen put on'over sleeved, and the nut C turned on'the4 threadedextension, as shown in g. 2, forcingA hub on to sleeve a until thenecessary pressure is secured. The coupling can then be bolted togetherin the same manner as a common flange-coupling. When a key, e, is used,the ends of the two shafts al d are brought together-after putting onthe parts ofV the coupling; the sleeve a passing over this key, thedi`erent ends are tightened in the same manner as before described. Thekey e can also be made to fit the slot or split in sleeve a, shown atg', fig. 4, or a corresponding mortise on the opposite side, so as touse the strength of sleeves a in communicating the force from one shaftto thc other. 4Either shaft can be removed from the coupling by loosingthe nut C, or l both shafts can be removed Without separating thecoupling in the centre. The coupling can also be separated by removingthe bolts O O in the flanges, leaving each half upon` the shaft, andwithout loosing the cone-sleeves a a. The nuts C C a-re turned by a.wrench fitting into holes shown at a a.

Having thus described the nature of our invention, its inode lofconstruction and manner oil operation, we

u do not claim the use of a split cone or sleeve in :i shaft-coupling;but what we doclaim, and desire`to secure by Letters Patent, is-

The use of two conical sleeves within two separate conical shells,orrangeil to act independently on each shaft, and forming the two halvesof a shaft-coupling, as herein setforgh and described.

W. E. LONDON, JOHN RICHARDS; Witnesses:

W. C. HARD, YW S. KELLEY`

